John e



ff 55 Z4' Maf. A TRNEY J. F. OCONNR. FRiCTlON DRAFT HKGGING. APPLICAUON HLED MAINS, 19mm ATTURNEY omiten rmermet nisnrontooitio Application leil .Merola Eli, 1,4231? lo all whom t may concern:

Be it known that l, JOHN F. OCoNNeR, n citizen of the United States, residing et Cilicogo, in the county of Coeli: end ,Siete of include the usuel tandem side castings have ing main front, rear and middle stops and corresponding limiting stops. Due to the constantly heavier service demanded of Specification of. Letters )reti-int.

eiteiited 'Moy 13, 1919.

No. li/i.

adopted to be used in oonnection with the usual type el tandem stop castings, comprises front :ind reni? followers i9 end 20, in-

termerfliate followers 21 end i2, iront spring in Fig. 1. lfurtlierntore, eecli of the intermediate followers is provided with spaced upper and lower :wins 2354-35 that extend between eecli intermediate follower and its Illinois, have invented e certain new' end 23,1'eer springl, vertically movable Wedge 60y useful improvement in Friction 'Drel't-ltigblocks 25..5, vertically movable triangulr ging, of which *tile following is :t `full., clear. shaped Wedges 2li- 26, longitudinally movconcise, and exact description, reference bcl elole wedges 27, E28 und 29, `plungers 30 and ing had to tlie accompanying drewinmr, 31, und simplementsl spring Vfollowers 32 forming n'pert of this specification. :and 33. llocli of the end followers 19 and 2() 65 This invention relates to improvements in 'is of the usuel 'forni lint eeeli intermediate friction droft rigging. follower is provided on its inner fece with As is Well known there ere inony tiroir opposed ep'pesitely inclined wedge surfaces sands of freight eers in service Wli'icli are 34 --34 which cooperate with tile inclined equipped with. tandem spring gears which ends of the wedge blocks es clearly shown 'Z0 freight cors, the railroads lieve been com corresponding :.idjzicent end follower so that 7o polled t0 increase the Strength of the under eich el? 1d mit! immediate followlrames of old eers und, in many instances, to ers is maintained :it :i fixed distance eport. provide 1heavier droit teurs than those of @n the side nearest the spring," eeeli inthe spring type. t termedinte 'follower recessed, es indicated The object of my invention is to provide :i nt till, to torni a seat Tier the eorrespondnovel form of friction geo-r of heavier cnpec- `ingr supplemental spring; zlfollovvcr 32 or ity than tandem spring gears and which may the letter lowing; the pioneers 31 and 30, rebe employed in combination with the usual spectively, formed integrally therewith and tandem stop castings now found on old eers extending' through suitable centre] porteran lwhereloy to effect a large saving to the rsiltions 37 in the interiiiediete followers. The 35 roads since they een employ the old. stop plungers 3U and 31 preferably have formed castings or cheek plates with the improved integrally therewith tlie Wedff'es 27 .and Q9, heavier friction gear. respectively. As will be un'erstood, :ill of In the drawing: formule' n mit of this the wedge elements are of suoli e Width as to speciication, Figure 1 is o longitudinal ver be readily accommodated loetween the center 90 tical section of o droit rigging showing my posts oit the stop castings etw-A, es shown in improvements in eonneetion therewith. Fig. Fig. 2. As also shown in seid iiguiethe 2 .is :t horizontal sectional View teken snbintermediate followers 2i end 22 ere norstentially on the line Q--Q et Fig. l. Fig. molly in engagement with their correspond 3 is o view similar to Fig. 1, but illustrating ing;l limitingstops 17 and 18 end not with the 9U the position of tlie ports under full buil. mein stops 13 end 1st, respectively. 'lllie rea- Fig. 4 is e transverse vertical section teken son for this will appear from the descripon tlie line l--fl of Fig. l. And Fig. 5 is a tion of the operation hereinafter. All the detailed yperspective view of one of the intelports of tilde gear are connected to the draw mediate followers. ber 40 ley ineens of e. yoke l1 and saddle 100 In said drawing, lO-io denote draft kplates 42M@ may bc employed to support sills to the inner faces of which are secured the perts in position. tandem sten `castings A--A of it well known The operation is es follows: Upon inward form. Esch of seid sto@1 castings A is promovement of the drew bor, it is obvltsthat vided with the usual inem front stop slioulthe front follower 19 and front intermediate 105 der 11. main reati' stop shoulder 12, mein in follower 21 will move inwardly in unison, terincdiate stop shoulders 13 and 14, end Whereas the rear follower 20 and rear intercorresponding limiting stops 15, 16, 17 mediate follower 22 will remain stationery. and 18. As the front set of followers moves in- Tlie improved friction gear, which is werelly, the wedge bloote 35e-25. will be 1.10

, l to the position ine wed-wes Q?, 28 and il', it is aigiparent that the 'n.gere Btl fno. Si will le actuated and con intly supplemental followers i res t set i risers,

igi.. construct-ion t aereln shown and oeed may be manufactured. at' relatively small expense and affords an eoonomieal ar rangement for railroads, since it permits them to reinploy the old tandem stop east l o-'otaiuintJg gear i weile at the same t. -o ,J oi much heavier capacity and better suited for the :present conditions eiviee elaimz L In draft rigging, the eomliination Uitl tandem stop eastinm t lia-ving the usual i intermediale mam stops and cori'ne 'g5-s, of tandem arrneuie' Ay engsgii" er respmitivi-vintermeo ate limiting' Stops, tandemarranged springs, frietioi'l elements located,` between the intermediate followers and between tl'ie eenter posts of said stop tastings, and means for moving either end le follower and the nearest intermediate fo.l lower simultaneouslyan the same direction to thereby compress the springs and actufrotion elements.

a rigging,

the combination indem stop castings having tnkiusual d il terineliate in and l'iniitil'ig 't front main and intermediate folru ble in unison in the same direci'ear main and intI diate followers .,.ovalilo in unison in the saine direction, tando-itt: arranged sprinfs, and friction elements bei'weon diate followers in. and' between the intermediate main stops of the tandem castings, said friction elen'xents being actuated upon movement of either set of end and intermediate followers.

3. In a, Yraft rigging, the combination stop el stings, of end followers, followers, the latter being' prot their opposed inner faces with iny e erposed between the end a: intermediate followers, a plurality of friction. elements coperable with said wedge surfaces, means forholding the rear inter mediate follower stationary when the rear end 'tollfmfer remains stationary, means for holdii g 'ne `front intermediate follower stationary en the front end follower remains station` and means for compressing the a direction from the intermediate oward the end followers during i or draft.

draft rigging, the combination ein stop castings having the usual l intermediate main stops and correlimiting stops, of end followers engaging the end stops, intermediate followers 'normally engaging their corresponding limiting stops, springs between the end and intermediate followers, and a plurality of friction elements interposed between and actuated by the intermediate followers.

In witness that I claim the foregoing I have hereunto subscribed my name this 7th dayY of Marel), 3.9i?,

JOHN F. OiCON N R.

arranged wedging sur 

